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MP8864 Datasheet Preview

MP8864 Datasheet

Synchronous Step-Down Converter

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MP8864
High-Efficiency, 4 A, 21 V, Synchronous
Step-Down Converter with I2C Interface
DESCRIPTION
The MP8864 is a high-frequency, synchronous,
rectified, step-down, switch-mode converter
with an I2C control interface. It offers a very
compact solution to achieve a 4 A continuous
output current with excellent load and line
regulation over a wide input supply range. The
MP8864 has synchronous-mode operation for
higher efficiency over the output load range.
The reference voltage level is controlled,
on-the-fly through a 3.4 Mbps I2C serial
interface. The voltage range can be adjusted
from 0.6 V to 1.87 V in 10 mV steps. Also, the
voltage slew rate, switching frequency, enable,
and power-saving mode are selectable through
the I2C interface.
Current-mode operation provides fast transient
response and eases loop stabilization. Full
protection features include over-current
protection (OCP), over-voltage protection
(OVP), and thermal shutdown (TSD).
The MP8864 requires a minimal number of
readily available, standard external components
and is available in a 15-pin QFN15
(3mm x 3mm) package.
FEATURES
Wide 4.5 V to 21 V Operation Input Range
50 /23 Low RDS(ON) Internal Power
MOSFETs
1% VOUT Accuracy
I2C Programmable Reference Voltage
Range from 0.6 V to 1.87 V in 10 mV Steps
with Slew-Rate Control
I2C Selectable Switching Frequency. Default
600 kHz Switching Frequency
Programmable Output Voltage
Power-Saving Mode, OTP, and OCP via I2C
Power Good Indication
1-Bit I2C Address Set Pin
OCP in Hiccup Mode
External Soft-Start
Available in a QFN 3mm x 3mm Package
APPLICATIONS
SoC and Media Processors
General Consumer
Distributed Power Systems
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For
MPS green status, please visit the MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
R8
10 Ω
4.5 V-21 V
VIN
VIN
C2
22 uF x 2
BST
SW
VOUT
FB
EN
EN/SYNC
VCC MP8864
C1
0.22 μF R4
100 kΩ
SDA
SCL
ADD
PG
PG
SS
AGND PGND
C4
0.1 uF L1
1 uH
1.2 V/4 A
VOUT
R9
100 kΩ
R1
C5
34 kΩ 47 uF
R3
R2
33 kΩ 34 kΩ
SDA
SCL
C7
22 nF
MP8864 Rev. 1.02
www.MonolithicPower.com
1
1/18/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.




MPS

MP8864 Datasheet Preview

MP8864 Datasheet

Synchronous Step-Down Converter

No Preview Available !

MP8864 SYNCHRONOUS STEP-DOWN CONVERTER
ORDERING INFORMATION
Part Number
MP8864GQ*
EVKT-8864
Package
QFN-15 (3mm x 3mm)
Evaluation Kit
Top Marking
See Below
*For Tape & Reel, add suffix Z (e.g. MP8864GQZ);
TOP MARKING
APE: Product code of MP8864GQ
Y: Year code
LLL: Lot number
EVALUATION KIT EVKT-8864
EVKT-8864 Kit contents: (Items below can be ordered separately).
#
Part Number
Item
1
EV8864-Q-00A
MP8864GQ evaluation board
2
EVKT-USBI2C-02
Includes one USB to I2C dongle, one USB cable, and one
ribbon cable
3
Tdrive-8864
USB Flash drive that stores the GUI installation file and
supplemental documents
Order direct from MonolithicPower.com or our distributors.
Quantity
1
1
1
Input Power
Supply
Input
GUI
USB Cable
Ribbon Cable
USB to I2C Dongle
EV8864-Q-00A
Figure 1: EVKT-8864 Evaluation Kit Set-Up
Output
Load
MP8864 Rev. 1.02
www.MonolithicPower.com
2
1/18/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.


Part Number MP8864
Description Synchronous Step-Down Converter
Maker MPS
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MP8864 Datasheet PDF






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